Depending on the tasks and purpose, calculators are divided into basic, special, engineering (scientific), financial and many others. Special programs embedded into websites are also called calculators. With their help, you can perform all sorts of calculations much faster.

# Calculator reference

## Mathematical calculators

Percentage change of a number

Engineering calculator

Scientific calculator

Notebook calculator

Square equation calculator

Square root, calculator

Common factor and multiple

Pythagorean Theorem Calculator

Degrees to radians and back

Mean Median Mode

Five Number Summary

Standard Deviation

Arcsin Calculator

Arccos Calculator

Arctan Calculator

Euler Totient Calculator

Prime Factorization

N Choose K Calculator

Factorial Calculator

GCD/LCM Calculator

Matrix Determinant

Area, and diameter of the circle